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Mass Transfer

Mass Transfer
The film penetration model of mass transfer was enunciated by

Toor and Marchello
Gilliland
Stefan
Fick

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Mass Transfer
Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture?

Inorganic solids
Bamboo
Anthracite coal
Rag paper

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Mass Transfer
Dried finished product sampled from various parts of a __________ dryer exhibits non-uniformity in the moisture content.

Tray
None of these
Freeze
Rotary

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Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

1.25 to 2.0
0.8 to 1.2
2.5 to 3.5
0.5 to 0.8

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Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re0.33
Re
Re0.53
Re0.83

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Mass Transfer
Which of the following remains constant during evaporative cooling process with recirculated water supply?

Wet bulb temperature
Relative humidity
Partial pressure of vapour
None of these

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